Coupon-cutting device



H 05mm. COUPON CUTTING DEVICE.

APPLICATION FILED DEC. 2I,-I920. 1,416,800; e ed May 23, 1922.

2 SHEETS-SHEET I.

y @HEHFH Deijen I H. DETJEN.

cduPoN cunum DEVICE. APPLICATION FILED DEC. 2.11 1920.

Patented May 23, 1922.

2 SHEETS-SHEET 2.

woaaw UNITED STATES ATENT OFFICE.

HENRY DETJEN, or MANITOWOC, WISCONSIN.

couron-currme nnvrcn.

' Specification of Letters Patent.

To all whom) it may concern: Be it known that I, HENRY DETJEN, a c1t1-zen of the United States, and resident of Manitowoc, in the county ofManitowoc and State of Wisconsin, have invented certain new and usefulImprovements in Coupon- Cutting Devices; and Ido hereby declare that thefollowing is a full, clear, and exact description thereof.

My invention refers to cutting machines and has for its primary objectto provide a simple economical and effective means for cutting movementof the will progressively contact clipping'rectangular coupons or tabsfrom the marginal edges of a sheet. Specific ob jects of my inventionare:

To provide a pair of rectangular associated floating shear bladesoperating in conjunction with a fixed whereby the mitered edges smoothlysevered from the sheet, the cut resulting in a clean sharp corner;

To provide means for attaching the blades to a plunger head so arrangedthat the mitered corners of the blades are normally spaced apart, withthe straight cutting edges inclined obliquely relative to the fixedshearing-surface, where y upon a downward or said blades, they with theshearing edges of the fixed surface to thus render them self-sharpening.throughout their entire length, and at the corner toes of the bladeswill close up to form a continuous cutting'edge, resulting in pressingthe blades a clean,sharp separation of the couponfroln the sheet;

To provideimeans for micromically adj usting the blades endwise,whereby-the nor-' mally spaced beveledv or mitered toes there of, willcome, together at the finish of the cutting operation to, insur e acleancut corner-"Y ,Tb provide vielding means for, normally apart "attheir toe end, from 1 a fulcrum at the 1 heel portions, where by thecuttingedgesof the companion blades willnormally overlap the baseshearing-sun.

faces froma said'bladesfwo a With the above and other minor objectspointfnear the heel portion of in 'view,. the invention consists incertain to the accompanying drawings and subsequently claimed.

-ure 1.

shearing-surface of the coupon are same time, the mitered frame,provided at a shearing-surface 2, which surface for the to its lower endillustrated in skeleton-form, having a hall of front feet 6-6, and arear foot 7. The

8, which sleeve upon a pin 8" that extends from the arm 3.

e of the head are peculiarities of construction and combina-.

t1on of mechanical elements, as herein de-. tures throug In thedrawings,

Figure 1 representsa central sectional elevation ofa cutting machineembodying the features of my invention, the parts being shown in theirnormal position of rest.

Figure 2 is a cross section section being indicated by line 2-2 of Figisa detail cross section through one of the cutting blades illuslgure 4 isa similar fragmentary view,

illustrating one corner the position assumed by the lmives or blades atthe completion of the cutting stroke, whereby the mitered corners ofsaid blades are brought together to separate the tab or coupon cleanlyat its corner, and

Figure 5 is a diagrammatic view of a sheet showing one-arrangement ofdetaching coupons, wherein a certain number of such coupons have beenremoved from the lower right hand corner.

Referring by characters to the drawings, 1 represents a base, in theform of a hollow its upper face with of the machine and convenience ofthe construction, in this instance is separable. The base is formed withan integral arm 3, which arm carries a spr ng controlled plunger 4,having attached a head 5, the same being skeleton head is also providedwith a sleeve is 'reciprocatively guided ehead, as awhole, is encased ina suitable shell 9. The rear foot 7 and front foot 6 provided' with'studs 10-10' respectively, the same comprising anchors for alooselvfitted si de blade 11, said blade being provi ed with slightlyelongated apermit end play as best shown in Figures 1, 2 and 3.

v Patented May 23, 1922. Application filed December 21, 1920. Serial No.432,213.

ofthe same, the a means for anchoring the blade to which the pinsextend, to perthe blade as shown.

The heel portion a, of the side blade, which is attached to the foot 7and the toe portion of said blade, which is attached to the foot 6, ispressed outwardly by means of coil springs 1212 respeet1vely, wherebythe lower obliquely disposed cutting edge 11 of saidblade is yieldinglyheld in contact with the shearing-surface 2 at the heel end of saidblade when the parts are in their normal or inactive position.

Thus, it will be seen that the side blade, in conjunction with the lowercutting surface 2, forms a V-shaped mouth for the insertion of a sheetof paper, when it is desired to sever a coupon therefrom. In order tosustain the cutting strain exerted upon the blades, the feet 7 and 6fare formed with offset lips 13-13 respectively, which lips engage thejuxtaposed upper surfaces of The toe end of the blade is formed with abeveled edge 11", the same being arranged to swing inwardly and forminga cross mitered joint in con' nection with a corresponding beveled toeedge 14" of an end blade 14. This end blade 14 is disposed at anapproximate right angle to the side blade, and is anchored to the feethead 6 and 6' respectively in the same manner as that previouslydescribed, with-reference to the'aforesaid side blade, the-parts beinglettered to correspond to the same mechanical elements associatedwith'said side blade.

It should also be understood that the heel portion a of the end bladecontacts with the rectangular shearing-surface 2, in the same manner asthat previously described in connection with the side blade, and thatthe lower cutting edge 14 of said blade is disposed obliquely withrelationto the cutting surface of the base to form a continuation of thefeed mouth when the head is sustained in its upward, inactive, normalposition. WVhen the companion knives are assembled, it will be notedthat their associated springs will split the mitered toes apart and thatsaid split, in effect, will fulcrum upon the heel of these knives atthat point which the heels thereof engage the shearing-sun faces 2. Thusthe knives in their normal, inactive position will incline outwardly oroverlap the rectangular shearing-surfaces of the base from their heelportions, whereby a positive shearing action will result, in connectionwith both knives progressively along the line of their respectiveshearing surfaces when the head is depressed in a cuttinlg operation.

t will also .be observed that when the knives are thus cutting andgradually retracting in opposition to their spring control, the miteredtoes of the knives are gradually drawing together, and as best shown inFigure 4, at the end of the cut when it is desired to sever the cornerof the coupon or tab cleanly. These mitered toes contact to form aclosed rectangular knife, whereby there is no liability of a ragged edgeoccuring at the mitered corner of the coupon, and it is thereby cleanlysevered.

It will also be observed that the knives throughout their entire lengthfrom heel to toe will be automatically sharpened at each cuttingoperation. In order to micromically adjust the gap between the toes ofthe knives, whereby they will close up snugly, even though the kniveswere subjected to wear from sharpening. I provide set 'screws 15-15which are in threaded union with the feet 7 and 6 and the heads" ofwhich screws are adapted to engage the rear ends of their associatedblades, whereby said blades can be moved slightly forward or back, asthe case may require. By referring to the diagrammatic view of Figure 5,it will be seen that when it is desired to sever a coupon ticket or thelike from an inte ral sheet, the sheet is inserted under the b adecarrying head and when the plunger is depressed, the side knife 11 willcut the coupon along toward line indicated at Y, while the end knife 14will complete the right angular out upon the line indicated at w.

lVhile I have shown and described an exemplification of my invention, inall of its structural features, it is understood that I may vary suchdetails for construction Within a fair interpretation of the claims, asmay be putupon them by the skilled mechanic.

I claim:

1. In a cutting machine having a reciprocative head, a base providedwith a rectangular shearing-surface; the combination of a pair ofrectangularly positioned blades 105 carried by the head having theirshearing edges obliquely disposed with relation to the baseshearing-surface, the heels only of which blades normally engage saidshearing surface, spring means for normally 110 separating the toes ofthe aforesaid blades wherebyv the lower cutting edges thereof overlapthe rectangular shearingsurfaces of the base, and whereby the knives,when cutting progressively sever 115 from heel to toe and simultaneouslycontract, causing the toe portions to come together to form anvunbrokencorner cutting surface, in the completion of the cutting stroke of theblades.

2. Ina cutting machine having a reciproeative head, and a hollow baseprovided with inner rectangular shearing-surfaces, the combination of apair of rectangularly disposed knives associated with the head, each 12knife being provided with an obliquely disposed lower cutting face and amitered toe, yielding means carried by the head for independentlyoperating the knives therefrom starting from a heel point of contact be-30 tween the lower cutting edges of the knives ends, and meansassociated with the head 20 and the base shearing-surface, when the forlongitudinally adjusting the blades.

parts are in their normal inactive position, 4. A cutting machinecomprising a base and means associated with the head for suphaving arectangular shearing-surface at its porting the knives to permit play ofthe upper edge, a reciprocative head positioned same. above theshearing-surface, a pair of rectan- 25 3. A cutting machine comprising abase gularly disposed transversely yield-able having a rectangularshearing-surface at knives associated with the head, having its upperedge, a rectangular reciprocative obliquely disposed cutting edgesadapted to head positioned above the shearing-surface engage theshearing-surface normally at a pair of knives associated with the headhavslightangle thereto, whereby said knives are 30 ing obliquelydisposedcutting edges adapted forced inwardly against the shearin -surto engagethe shearing-surface of the base, face from their heel ends in a cuttingoperapins for loosely supporting the knives in contion.

nection with the head, springs interposed be- In testimony that I claimthe foregoing tween the inner face of the knives and head; I havehereunto set my hand at Manitowoc 35 whereby said knives are forcedoutwardly in the county of Manitowoc and State of from a shearingcontact point between the Wisconsin.

cutting surfaces of the blades at their heel HENRY DETJEN.

